Thirumurthy and colleagues analyze whether the uptake of voluntary medical male circumcision increases with provision of compensation in a randomized clinical trial of 1502 uncircumcized men aged 25 to 49 years in Kenya.

To investigate incidence of severe combined immunodeficiency, Kwan and coauthors performed a retrospective observational study including data for 3 030 083 infants from a range of newborn screening programs in 10 US states plus the Navajo Area Indian Health Service.